I post a lot if things here on electro music. Unfortunately, limited finances does not allow me to build most of the designs or finish them. However, I like to share... Here are my lunetta foils if anyone is interested. Most of them will be found on this site and others. The schematics are often included. as always they will have to be sized using the DIP pins. Thanks to everyone that provided the information. All remain untested...

Why do i do this? Well, my breadboard is an unreliable old piece of junk, I need a new one. So I do some of the layout in advance in MsPaint, with parts of the datasheets as a reminder to self. Might as well post these.

Some more explanation: I prepare the boards with a socket, batterie header and bypass capacitor (upper left).

Ground lines are extended with the green lines at the back, so I have ground running underneath the IC, and left and right of the board to have plenty of room for timing caps and pulldown resistors.

I used pulldown resistors even for unused inputs to keep the option of using it later.

I hope this will be convenient to some of you.

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Last edited by electri-fire on Mon Feb 22, 2010 7:43 am; edited 2 times in total

Some things are just too complicated or versatile. I've been making these little boards, selecting the most interesting IC's in my collection, but it's getting way too much. I need to preserve panel space.
This little 4017 board divides the input by 3 or five. Occupies one input, one output, one switch.

Hey, I discovered these in my collection. The 4042 Quad Latch. What's that you may ask. It has 4 inputs, 4 outputs, 4 inverted outputs.

And two Enable inputs. When both Enable pins are equal, both Hi or both Low the four inputs are passed to the outputs, as is, and inverted.

At the moment the Enable pins are NOT equal, the outputs are held.

With one Enable input fixed to ground (or +V), the other Enable input can function as a single Hold switch.
I laid out a little scheme with a manual Hold switch.

But hey, come to think of it, using both enable pins and the 4 data in pins would take six oscillators. Six oscillators from a 40106 hardwired to the 4042 might be an interesting little module to have.

What if I added a R2R DAC (like Inventor used in his 4-Osc-Lunetta schem he posted) at the outputs of the 4042?
Then we would have a 4-bit Control Voltage available to power the 40106 oscillators. Result? Silence, as the 40106 has no power, so no oscillations....

Now have a momentary +V added to pin 16 of the 40106 to start the circuit. Oscillations start, and voltages are held at the (powered) 4042.
Now the 40106 is powered by the varying output of the 4042 R2R DAC.

Output frequency of the 40106 change with varying voltage, thus changing the patterns from the 4042. Those patterns will change the output frequency of the 40106. Next, .....

(electri-fire has just left the room. His manic laughter can be heard as he makes his way up the stairs.)

Yes, you see... this is IT!!! Hidden away among all the bum-fodder of this topic is some hands on stuff. This is EXACTLY what novices like myself need. Practical examples of what to actually make... what to solder where.

Eventually this elusive information will filter down from the secret society of the Kingdom of Lunetta into the lower caste masses...

Thanks everyone for sharing these designs! More of the same please anyone and everyone!

I won't speak for everyone - but for me there was a "concept" learning curve. Before mosc began talking about these -not that long ago - there were few sound samples, no drawings, and not much of a community to draw upon. The early posters in the Lunetta forum provided a few ideas to get started, and that's really all there was.

One thing I am amazed by, is the variety of directions people have taken these. Everyone has a unique twist on the way they use them and how they put them together. Very cool.

It's really a different way to think about making music instruments...
Build a few circuits on the breadboard, wire them together and it begins to become more clear..

I won't speak for everyone - but for me there was a "concept" learning curve. Before mosc began talking about these -not that long ago - there were few sound samples, no drawings, and not much of a community to draw upon. The early posters in the Lunetta forum provided a few ideas to get started, and that's really all there was.

One thing I am amazed by, is the variety of directions people have taken these. Everyone has a unique twist on the way they use them and how they put them together. Very cool.

It's really a different way to think about making music instruments...
Build a few circuits on the breadboard, wire them together and it begins to become more clear..

bruce

I agree on everything from Bruce, in my experiences here.

As well - I see the Lunetta existance as well (myself specifically, I should limit) as a 'new' (old way found again) way of making music - in many regards, throwing away the restrictions that are and have been cast upon those of us who've had lessons, as well as others who aren't happy with popular radio; etc. (Many more angles to this.)

What has been growing from this, especially thanks to Howard and Stanley Lunetta - are the avenues opened to us to return, to this area and create things that please us.

/stepping down from pedestal, instead of continuing on for a world record attempt in speech giving

So I built these one-chip modules, and droffset asked me in the chatroom recently how I get these organized. I had to admit I had these on the lap, pots, wires and batteries dangling all over the place.
Inspired by droffset's latest build, I decided to go a similar route, building a No-Frontplate-Lunetta, that can host my CMOS modules and have some generic stuff hardwired on board.

I mentioned wanting multiple out's, wich I have indeed, and they are great fun.

I have a 40106 with 4 osc's, two of them hardwired to 4040's.
Playing around with LED's between random outputs (three of each) and picking of the sound from the LED's intermodulates the frequencies nicely. With multiple LED's, the sounds are different from each LED lead, but obviously rhythmically related. Nice for stereo. I'm starting to wonder why I'd even bother with this Gate stuff at all.

I will definitely add more output headers to accommodate interconnections with LED's. Maybe I best make an array of LED's near the in/out headers, some of my LED leads are too thick for the in/outputs, and having different color LED's is fun. Also my LED leads are bent all over the place now, and have to be forced in.

All LED's would need double (ah, make that triple) header in-out's to be able to send the sound to my mixer (a TL062, chosen for it's low power use).

This setup beats any rude words out of my CMOS Gate modules. It's fast and versatile, cheap, needs little space on the board, is easy to build, and could replace your fixed LED's.

So the 1 or 0 value at each side of the LED is doing its own gating? Pretty sweet.

Exactly. All connections are made between outputs. I have 5 LED's in the posted picture with some leads sharing an output. So there's seven different sounds going on there. Doing this with gates takes two IC's at least.
I figured a bunch of patchable LED's might benefit from multiple in-out's but there's no need for that. As the LED leads are plugged into CMOS outputs I better make more of those.

Hmpff, I never seem to make up a layout and actually pursue finishing it as planned. I had already soldered part of a potmeter assembly consisting of 8 trimpots. These will have DIP switches to switch them in series. The wiper will have two inputs, straight, one through a resistor.
The idea is to have this configurable as single pots, adjustable R/xR DAC's, and whatever comes to mind later, probably disrupting any conceptions of what it should be able to do later :: .

So between this row of trimpots I had room planned for three E-chuck-Lunetta boards, but that's not going to happen. My little mixer is screaming for more inputs. I had 8 Normally Open Momentary to +V, plus one "engage switch" planned, for use with a 4021 shift register and 4042 S&H module, but eventually wising up I'll refrain from soldering them up for now.

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